Engineering BE Electronics and Telecommunication Sem 5 May 2019 2019 Electromagnetic Engineering Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 Question no. 1 is Compulsory
2. Q2 Attempt any three questions out of remaining questions
3. Q3 Assume suitable data if require
4. Q1 Attempt any four 20 marks
   • a) Explain Wave equation for free space
   • b) Divergence and Curl of F = r cosy + dg Units
   • c) Derive Faraday’s Law with suitable applications
   • d) Derive Laplacian’s Equation for charge free dielectric region
   • e) Explain Reflection Coefficient of Transmission lines
   • f) Explain Gauss’s Law in detail with applications
   • g) Derive relationship between Electric field and Voltage
   • a) Derive magnetic field provided by infinite thin filament caring current I suspended on ‘z’ axis. Also, provide significance over short filament. 10
   • b) Calculate input impedance of the lossless transmission line terminated by load impedance of = 100 + = 50 2 system with length of | = 0.35A with f = 3GHz, air as dielectric for transmission (Either by theoretical method or by Smith chart). 10
   • a) Find out total Electric field at Origin because of following charge distributions: 10 e Point charge of 20nC placed at (—1,—2, e Point charge of 50nC placed at (—2, e Uniform infinite line charge of 2nC/m placed atx = —5,z = —6 e Uniform infinite surface charge of 0.5nC/m? placed at z = —5
   • b) Explain Point and Integral format of Time Varying field Maxwell’s Equation with
   • a) If plane interface between two perfect dielectric mediums is located at = 0.A 4GHz uniform planar wave travelling along z axis is incident from region 1, z < 0 onto region 2, z => 0. The wavelength in dielectrics are 2, = 6cm and A, = 4cm Both the materials are non-magnetic. What are the percentage of energy on e Standing wave ratio in region 1 10
   • b) ~ Aircraft antenna radiates Electric field in air (o = 0, = = whichis E = 25 + 0.33x)a, KV/m find out following terms related with this EM
   • a) Two plates of cylindrical capacitor describe by their radius = 1mm & = 1mm holding voltage of V, = 1V and V, = 100V find out E in capacitor, also prove that dielectric of capacitor dose not carries any charge. 10
   • b) Derive Poynting Vector and explain effects of medium parameters on EM power with suitable diagram 10
5. Q6 Write short note on 20 marks
   • a) Super Conductivity
   • c) Wave equation for transmission line
   • d) Electrical Discharge

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